I was forced to systemd, as kde's powerdevil seems to be broken on non-systemd-systems. As really nothing works with systemd (no network, no sshd, no cups...) I wanted to boot into openrc (reading bugreports - this was said to work fine) and I was not allowed to mount USB discs or suspend my machine. After fiddling around it turned out to be polkit. Building it with USE="-systemd" magically gave me back rights to suspend/mount/whatever other fancy stuff.
See my patch: https://bugs.freedesktop.org/show_bug.cgi?id=63504 there is an ebuild on the systemd-love overlay.
could you retest with lastest systemd? It's not solving issue, but with lastest packages (at least ~amd64 or ~x86): systemctl enable dhcpcd systemctl enable sshd systemctl enable cupsd this should help :)
*** This bug has been marked as a duplicate of bug 468938 ***